You do need to take into account however that biking might reduce the need for other form of exercise which would counteract the increased emissions. But either way I’d bet that per km biking is vastly more efficient, as in orders of magnitude more efficient.
You do need to take into account however that biking might reduce the need for other form of exercise which would counteract the increased emissions. But either way I’d bet that per km biking is vastly more efficient, as in orders of magnitude more efficient.